Pile-fabric loom



E. w. STONE 1,733,634

PILE FABRIC LOOM Oct.:29,- 1529. 7

Filed March 22, 1929 S-Sheets-Sheet 1 INVEN TOR;

3 Sheets-Sheet 2 //V VE'N TO)? J B) M E. W. STON E A TTbR/VEY Oct. 29, 1929.

FILE FABRI C LOOM Filed March 22, 1929 Oct. 29, l929.- E. w. STONE PILE FABRIC LOOM Filed March 2 2, 1929 3 Sheets-Sheet 5 //y VE/V TOR,

ATTORNEY I EDWIN w. seams LONGMEADOW,

Patented Oct. 29, 1929 UNITED STATES:

M SSACH SE TS; Assieivon To BIGELOW-HART-I roan CARPET COMPANY, or THO P QN'VIL E, CONNECTICUT, A ooRPoRATIoNor] MASSACHUSETTS I PILn-FABRIoLooivrit Application filedMareh 22,1929. Serial No. 349,207;

This invention: relates to pile fabric looms for the production of cloth having either out or uncut pile surfaces, and is more particularly directed to the pile wire controlling mechanism.

' t is now the ordinary practice to provide looms of 'the ahove typewith a pile wire carriage or horse and to actuate the carriage in one direction for the insertion of pile wires in the shed "and in the reverse direction for withdrawing pile wires from the cloth. The

requisite movements are now ordinarily im-- parted to the carriage or horse by a continuously driven chaln for withdrawing successive pile wires from the'cloth and a rope intermittently operated to insert the withdrawn pile wires in the shed.

'During the withdrawal movement of a pileiwi're by the carriage the rope operating mechanism "is {usually idle and the rope is drawn outwardly by the outward movement of the carriage to which it is connected.

the outward movement of the carriage or horse tends to stretch therope andthistendency becomes emphasizedwhen the loom is of extra width now demanded by'the trade Looms ofthis general type are usually pro-- vided with a switch having a guide-groove for the support of a plle wire as 1t is withdrawn from theoloth;andatter the pile wire has been withdrawn and is held bythc switch the latter is given a rearward movement to" position the pile wire for iinsertion infthe shed. During the end of the pile wire then supportedin the switch is liable to strike theheads or butts of the pile wires-hound in the clothas switch is moved from its pile wire withdraw ing to its pile wire inserting positiona An important feature of the present invention therefore con'sis'tsof means wirecarriage in its outer or retracted position against the contractile force of the the switch is moved from its pile wire withdrawing to its pile A wire in- 1' serting position the end of the pile wire then in the switch will notcontact withthe heads the pi lc rope, so that as The pull thus imparted to the rope or cable by this movement of the switch the for holding or hutts of the pile wires bound in the cloth, andto etl'ect release of the pile wire carriage by movement of the pilewire withdrawing chain. i a lna'smuch as the withdrawn pile wire then in the switch is to be moved into pile wire in-:

sertlng position, an appreciable time elapses' between the release of the pile wire carriage fromfthe chain and the positioning of the switchto its pile wire insertingposition and the present inventionthereit'ore contemplates that after the pilewire carriage has been moved to its outer position and engagedby the 'carriageholding means a further move mentoi the withdrawing chain is utilized to etrect releaseotthe carriage to its plle wire inserting movement. l I

"The interval of time between the release of the carriage and the chain and therelease of the carriagefrom the holding means will vary in different looms, and another feature ofthe present invention therefore consists. in means for varying the interval between S the relcaseo't the carriagefrom the chaln and the releasegofthecarriage from'the holding A means hy the chain. A A

The invention and novel featuresthereof will best be made clear from thesfollowing description and the accompanying drawings i so ot one good practical form thereof."

Inthe drawings I 'Fig. 1 is ageneral present invention;

Y A frontelevation of por tions of a plle'fabrio loom containingthe a frontelevation on an enlarged Fig. 4 is an enlarged sectional viewion the line 4;-4;of Fig. 2. I A I lathe-presentdrawings only a portion of theloom properisshown,'suilicient toillu's trate the operation of the pile wire controlling means and,- as usual, the loom train e consists o f'the Side members 1; the lay 2, and. shuttleboz; 3; a nd as these parts are of usual construction their detailed illustration and description appears unnecessary.

Extending from one side of the loorn' is the supporting frame a on which is mounted the runway 5 which may be and preferably isof channel shape, as usual, the side members of which afiord appropriate sup port for the pile wire carriage 6. H

p The pile Wire withdrawing means consists of a continuously driven chain 7 having one or more lugs 8 and the upperrun of the chain 7, as indicated in Fig. 2 at 9, travels in thetroughlike guideway of the pile wire carriage support. The pile wire withdrawing chain passes about a guide-roll or sprocket 10 at the outer end of the supporting frame and about a similar guide or sprocket 11 at the inner end portion of the supporting frame, and the chain is driven continuously from the chain wheel 12 which as shown preferably consists ofa sprocket wheel about which a portion of the chain 7 passes, and to guide the chain in itstravel suitable guiderolls or sprocket wheels 13 may be employed, it being understood that the chain wheel 12 is continuously driven from any suitable source of power'now common and well understood in the art. r

The pile wire inserting means consists of a rope or cable 14, one end of which is secured to the pile wire carriage 6 at 15, while the inner, portion of the rope or cable passes about a guide pulley 16 at the inner end of thezsupporting frame at.

As hereinbefore stated, the pile wire inserting rope or cable is intermittently driven to insert a pile wire in the shed, and then its driving means is disconnected from the source of power topermit the rope to be pulled outwardly by the carriage as it is moved to its outer pile wire withdrawn position. As indicated in the present instance of the invention, the pile wire inserting rope is actuated from the rope-wheel 17 which is preferably formed with a scroll, as shown, to

regulate the speed of pile wire insertion.

As the pile wire carriage 6 is moved outwardly by the chain the rope wheel is freer from its actuating mechanism and consequently the rope is pulled outwardly, under considerable strain in some cases, which has the effect of stretching the rope when, the carriage has reached its outer position. When the carriage is in its outer position and L is freed from its connection with the chain,

as will presently appear, the contractile force of the rope tends to move the carriage inwardly.

As usual in pile fabric loomsof the general type herein shown, the switch 18 is pivotally supported at 19 on a bracket 20 which may be conveniently secured to the supporting frame a, the construction being such that theswitch 18 may be moved. frontwardly into its pile wire withdrawing position and aftertlie pile 'wire has been withdrawn it may be moved inwardly or towards the rear of the loom into pile wire inserting position, as indicated by full lines in Fig. 2. I

When the switch 18 is being moved from its front to its rear position it contains a pile wire, as indicated in Fig. 2, and such movement of the switch to and from its two positions may be effected, as usual, by suitable ineans, herein typified by a link 21, Fig. 2'

.During the movement of the switch from its pile wirewithdrawing or front position to its pile wire inserting or rear position, the end of the pile wire, as at a, moves past the heads or butts Z) of the pile wires then bound in the cloth, and obviously, if the contractile force of the rope or cable acts upon the carrlage to move it. inwardly to a slightextent upon its release from the chain, the end of the pile wire a is liable to engage the heads or butts of the pile wires then bound in the cloth, a condition that would mean breakage of parts.

In accordance with the present invention, therefore, means are provided for engaging and holding the carriage in its outer pile wire withdrawn position when it is released from thechain and efiect release of the carriage from its holding means by continued movement of the pile wire withdrawing chain. 7

Pivotally mounted upon the pile wire carriage at 22, Fig. 3, is the dog 23 having a shouldered portion 24 adapted for engagement with one of the projections or lugs 8 on the. pile wire withdrawing chain 7, to effect outward movement of the pile wire carriage.

Pivotally mounted at'25 on the pile wire carriage 6 is the locking lever 26, the lower end portion of which is adapted'to engage a recess 27 in the dog 23 when the latter is engaged with a projection or lug 8 on the chain to thereby prevent any accidental release of the carriage from the pile wire withdrawing chain during withdrawal of the pile wire.

When the pile wire carriage has reached its outerposition and the pile wire has been withdrawn and is held in the switch it is desirable that the connection between the chain and pile wire carriage be interrupted. It becomes desirable, therefore, that the locking lever 26 be-first disengaged from the dog against the tension of its locking spring 2-8. Secured to the outer portion of the support 4 is a bracket 29 in which is mounted a locking lever trip 30, consisting of a roll, in the present instance of the invention, adapted to engage the upper end portion v31 of the locking lever and throw it out of action.

. A positive disengagement between the dog and the lug or projection on the chain is effected by contact with the upwardly eX- tending arm 32 of the dog'which engages rope'or cableis liable to move the carriage inwardly and eii'ect the undesirable results hereinbeforestatcd. a

To preventthis inward movement of the carriage when released from the chain, the present invention provides a catch 34 pivotally mounted a' t-35"on abraclret 86 secured in fixed position'onthe support 4: or the up per t-roughway thereof, as indicated in Fig; 3. The catch 84 has a shoulder 37 adapted to engage a complemental shoulder 38 onzthe pile wire carriage 6 when the latter is in its outer position. .3 I I As hereinbefore stated, the catch 34 is pivoted'at 35 and liasalaterally extending'tail portion 39 which is under the influence ofa yieldingplunger :40 mounted in fixed position" on the supporting frame. The plunger 40-may preferablyibev under: the influence of a spring 41 in ahousing 42 but obviously this feature may be variously contrived. To limit the swinging-"movement oi": the catch there is a stop 43 secured in fixed position'on the support 4 :a'ndadapted to be engaged by the end portion 39 of the catch when the lat-' ter is in its carriage holdingposition. 1

The construction described is suchthat as the pile wire carriage reaches itsouter limit of pile wire withdrawing movement and is released fronrthe i pile wire withdrawing chain, the catch 34 comes into action to hold: the carriage in its outer position, as indicated inFig.8.: 1 An appreciable ti1ne,though small in extent, elapses between the disengagement of the pile wire carriage from the chainto per mit the switch to be moved from its pile wire withdrawing toits pile wire inserting position and during this interval-the catch34 maintains the carriage in its outer position against the contractile forceoi'gthearope or cable. w. J The present invention utilizes the'continued movement of the withdrawing chain ,7to trip the catch and tree the carriage subsequent to the release of thecarriage from thewchain and in accordance withthedisclosed form of the invention in thisrespect the tail portion 39 of the catch has adjustably secured thereto a lug or trip 44 which is engaged by the lug or projection 8 as the chain" continues its] movement towardsthe outerend of the sup porting frame, the construction being such that after the carriage has been released from the chain, as hereinbefore' described, the on:

thereby to be swung to its wireinserting p0 'riage from the chain and itsrelease fromthe tinned outward movement of the'chain causes the lug or-projection8 thereofto strike the inclined surface "45 of the lug or trip 44,"litt the tail end portion of the catch in opposition to its spring 41,thereby freeing the carriage ing-position. a.

Inasmuch as the interval between the release'of the carriage tromthe chainand the release of thecarriage from the holding catch may vary in accordance with different con ditions in loom construction, the present invention provides that the lug or trip 44 be adjustably secured to the tail 39 of the catch and provides a? series of depressions or teeth 46 adapted to engage projections 47 onthe lug or trip 44'When the latter is moved lengthwise of switch :has' beenmoved into pile wire insertthe tail 39. Toholdthe lug or trip44 in its determined position on the tail 39 suitable means maybe employed, such, io'rinstance, as the'serew bolt 48.- 1 l From the construction described asflone good p'racticaliorm of the present invention it will be apparentthat whenthe carriage has reached its outer POSltlOIlfilS indicated in Fig.3, and is'released from the chain, the e catch will hold the carriage for an interval of time until the projection or lug .8 on the chain contacts with thelug or trip 44 .onthe, tail. of the catch, with the result that/any] inward movement of the .carriage due to the contractile force of the rope will'be. overcome andthe-carriage held in its proper position'to permitthe switch and the wire held sition before the carriage is released from the catch, and it will also be evident that the interval of time betweenthe release of the, carholding catch maybe varied to suitconditions ofuse.- When the I carriage reaches its outer pile wire withdrawn position it I may sometimes be desirable to provide a yielding bumper or cushion against which the carriage may bear I and uponwhich it may be held bythe catch, and to this end as indicatedin Fig. 2 there is-a'finger49 pivotallymounted at :50 upon a bracket 51 extending laterally from the sup-: port 4 or'the upper runway thereof. The face ofthe pivoted member l9 may conveniently be provided with a cushioning material 52 against which'the carriage bears whenitv is in its'outer pile wire withdra'wnposition;

:Whatisclaimedis: 1. In a pile fabric loom, the combination of a pile wirecarriage supported for movements to withdraw and insert pile wires, a pile wire supporting switch movable to one posi;

tion for withdrawal of a pile wirefromtheg cloth and to another position'for insertion of I a pile wire in the shed,- mechanisms for moving the 'pilelwire carriag'e towithdraw and lnsertplle *w1res',means for holding the pile 1 to its pile wire inserting movement atter the wire carriage in its outer retractedposition when released from the wire withdrawing mechanism, and means actuated by the with drawing mechanism subsequent to the release of the carriage therefrom to free the pile wire carriage to its pile wire inserting movement.

2. In a pile fabric loom, the combination of a pile wire carriage supported for movements to Withdraw and insert pile wires, a pile wire supporting switch movable to one position for withdrawal of a pile wire from the cloth and to another position for insertion of a pile wire in the shed, mechanism for moving the pile wire carriage to withdraw and insert pile wires, a catch for holding the pile wire carriage in its outer retracted position when released from the withdrawing mechanism, and a part actuated by the pile wire withdrawing mechanism after it has released the carriage to trip the catch and free the carriage to its pile wire inserting movement.

3. In a loom employing pile wires, in combination, a pile wire carriage supported for reciprocatory movement to insert and withdraw pile wires, a pile wire supporting switch adapted to occupyone position during the insertion of a wire and a diiferent position during the withdrawal of a, wire, means for moving the carriage in the wire withdrawing direction, a rope for moving the carriage in the wire inserting direction, means for holding the carriagein its withdrawn position against the tension of the rope, and a part controlled by the wire withdrawing means for freeing the carriage from the holding means after the carriage has been releasedfrom the wire withdrawing means. 7

4;. In a pile fabricloom, the combination of a pile Wire carriage mounted for movements to insert and withdraw pile wires, a chain for imparting-pile wire withdrawing movement to the carriage, a rope connected to the pile wire carriage for imparting pile wire inserting'movement thereto, a pile wire switch, movable to and from position for inserting a pile wire in the shed, a catch for holding the pile wire carriage in its outer position against the contractile force of the rope when the carriage is released from the chain, and means controlled by the continued movement of the chain for freeing the pile wire carriage from the catch after the carriage has been released from the chain. 7

5. In a pile fabric loom,the combination of a ile wire carriage, a chain for moving the carriage to withdraw pile wires from the cloth, a rope or cable for moving the carriage to insert pile wires in the shed, means for releasing the pile wire carriage from the chain when thecarriageis in its outerposition,

a catch forholding the carriage in its outer position from-inward movement by the con-. tractile force of the'rope when the carriage has been released from the chain, and means vase-e34 actuated by chain movement after release of the carriage from the chain to trip the catch and free the carriage to its wire inserting movement. a

6. In a pile fabric loom,othe combination of a pile wire carriage, a chain for moving the carriage to withdraw pile wires from the eloth,-a rope or cable for moving the carriage to insert pile wires in the shed, means for releasing the pile wire carriage from the chain when the carriage is in its outer position, a catch for holding the carriage in its outer position from inward movement by the contractile force of the rope when the carriage has been released from the chain, means actuated by chain movement after release of the carriage from the chain to trip the catch and free the carriage to its wire inserting movement, and means for varying the interval between the release of the carriage from the chain and its release from the catch.

7. In a loom employing pile wires, in combination, a pile wire carriage supported for reciprocatory movement to insert and withdraw pilewires, a rope or cable for moving the carriage in the wire inserting direction, a chain for moving the carriage in the wire withdrawing direction, latch meansfor holding the carriage in its retracted-outer position, and latch releasing means operable by said chain and adjustable to difl'eren't positions along the chain path to vary the time at which the carriage is released from the latch means.

8. In a pile fabric loom, the combination of a pile wire carriage, a chain for moving the carriageto withdraw pile wires from the cloth, a rope or cable for moving the carriage to insert pile wires in the shed, means for releasing the pile wire carriage from the chain when the carriage is in its outer position, a catchfor holding the carriage in its outer position from inward movement by contractile force of the rope when the carriage has been released from the chain, and a lug carried by the chain to trip the catch after the carriage has been released from the chain.

9. In a loom employing pile wires, in combination, a pile wire carriage supported for reclprocatory movement to insert and withdraw pile wires, means for moving the carriage in the wire inserting direction, a chain for moving the carriage in the wire withdrawing direction, a latch for holding the carriage in the retracted position, and means carried by said chain and adapted to actuate the latch to release the carriage.

10. In a loom employing pile wires, in combination, a pile wire carriage supported for reciprocatory movement to insert and withdraw pile wires, means for moving the carriage in the wire inserting direction, a chain for pulling thecarriage outwardly, a latch for holding the carriage in its retracted position, and means operable by said projection for actuating the latch to release the carna e.

f5 testimony whereof, I have signed my name to this specification. 1

EDWIN W. STONE. 

